I am working on a project and I have been using the website CEARUN. Unfortunately it has closed down and I do not have an alternative.! Does anyone know of a similar site.? I need a place where I can enter random data like the propellant materials, the fuel ratio etc and obtain an approximate engine output data.

I am working on a project and I have been using the website CEARUN. Unfortunately it has closed down and I do not have an alternative.! Does anyone know of a similar site.? I need a place where I can enter random data like the propellant materials, the fuel ratio etc and obtain an approximate engine output data.